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Bug 651072 - Support HTML parsing in XMLHttpRequest. r=smaug.

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This commit is contained in:
Henri Sivonen
2011-11-16 09:38:51 +02:00
parent 7c963f4aa1
commit 8cb7bb6eef
23 changed files with 384 additions and 65 deletions
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24
parser/html/nsHtml5StreamParser.cpp
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@@ -356,6 +356,10 @@ void
nsHtml5StreamParser::SniffBOMlessUTF16BasicLatin(const PRUint8* aFromSegment,
PRUint32 aCountToSniffingLimit)
{
// Avoid underspecified heuristic craziness for XHR
if (mMode == LOAD_AS_DATA) {
return;
}
// Make sure there's enough data. Require room for "<title></title>"
if (mSniffingLength + aCountToSniffingLimit < 30) {
return;
@@ -609,6 +613,15 @@ nsHtml5StreamParser::FinalizeSniffing(const PRUint8* aFromSegment, // can be nul
mCharset.AssignLiteral("windows-1252");
mCharsetSource = kCharsetFromWeakDocTypeDefault;
mTreeBuilder->SetDocumentCharset(mCharset, mCharsetSource);
} else if (mMode == LOAD_AS_DATA &&
mCharsetSource == kCharsetFromWeakDocTypeDefault) {
NS_ASSERTION(mReparseForbidden, "Reparse should be forbidden for XHR");
NS_ASSERTION(!mFeedChardet, "Should not feed chardet for XHR");
NS_ASSERTION(mCharset.EqualsLiteral("UTF-8"),
"XHR should default to UTF-8");
// Now mark charset source as non-weak to signal that we have a decision
mCharsetSource = kCharsetFromDocTypeDefault;
mTreeBuilder->SetDocumentCharset(mCharset, mCharsetSource);
}
return SetupDecodingAndWriteSniffingBufferAndCurrentSegment(aFromSegment, aCount, aWriteCount);
}
@@ -690,7 +703,9 @@ nsHtml5StreamParser::SniffStreamBytes(const PRUint8* aFromSegment,
}
// if we get here, there either was no BOM or the BOM sniffing isn't complete yet
if (!mMetaScanner && (mMode == NORMAL || mMode == VIEW_SOURCE_HTML)) {
if (!mMetaScanner && (mMode == NORMAL ||
mMode == VIEW_SOURCE_HTML ||
mMode == LOAD_AS_DATA)) {
mMetaScanner = new nsHtml5MetaScanner();
}
@@ -698,7 +713,7 @@ nsHtml5StreamParser::SniffStreamBytes(const PRUint8* aFromSegment,
// this is the last buffer
PRUint32 countToSniffingLimit =
NS_HTML5_STREAM_PARSER_SNIFFING_BUFFER_SIZE - mSniffingLength;
if (mMode == NORMAL || mMode == VIEW_SOURCE_HTML) {
if (mMode == NORMAL || mMode == VIEW_SOURCE_HTML || mMode == LOAD_AS_DATA) {
nsHtml5ByteReadable readable(aFromSegment, aFromSegment +
countToSniffingLimit);
mMetaScanner->sniff(&readable, getter_AddRefs(mUnicodeDecoder), mCharset);
@@ -719,7 +734,7 @@ nsHtml5StreamParser::SniffStreamBytes(const PRUint8* aFromSegment,
}
// not the last buffer
if (mMode == NORMAL || mMode == VIEW_SOURCE_HTML) {
if (mMode == NORMAL || mMode == VIEW_SOURCE_HTML || mMode == LOAD_AS_DATA) {
nsHtml5ByteReadable readable(aFromSegment, aFromSegment + aCount);
mMetaScanner->sniff(&readable, getter_AddRefs(mUnicodeDecoder), mCharset);
if (mUnicodeDecoder) {
@@ -869,7 +884,8 @@ nsHtml5StreamParser::OnStartRequest(nsIRequest* aRequest, nsISupports* aContext)
}
// For View Source, the parser should run with scripts "enabled" if a normal
// load would have scripts enabled.
bool scriptingEnabled = mExecutor->IsScriptEnabled();
bool scriptingEnabled = mMode == LOAD_AS_DATA ?
false : mExecutor->IsScriptEnabled();
mOwner->StartTokenizer(scriptingEnabled);
mTreeBuilder->setScriptingEnabled(scriptingEnabled);
mTokenizer->start();